hmmmmmmmmm. we have a min of 5 vendors here that sell quality chems for this type of cleaning.
I buy diffrent chem's from most of them.
I buy from Steve,Beth,e-spec,delco,and some "homemade".
I suggest you look at all of these vendors.
Beth and steve have excellent service and bbs to help with the use of their chem's. Very helpfull.